well i just got a 84 rx7 it has a 13B in it and there is water in the oil anyone know why and there is white smoke cumin out the tail pipe need help plezzzzzzz

 

Is it a GSL-SE? Or did someone drop one in? If it's stock, you have a small chance that the intake is leaking and allowing a water O ring to leak into the intake.

But, if it's in the oil, probably a rebuild will be needed. Sorry.

 

How much water? If it is just a little condensation it could be from a poor ventilation system for the oil. It happens to many modded 12As but I'm not sure on 13Bs.

 

yes itz a gsl-se and there is so much water in the oil the oil look likes milk!

 

Milky(frothy) could also mean you put too much oil in, but my guess would be water.

 

If it's white smoke it's usually coolant being burned in the combustion process. This could be a result of bad water o rings and water jackets. If it's that bad it sounds like you need a rebuild. Is the car overheating at all?

 

no the car is not over heatin i just got back from messing with it i smelled the smoke and it smells like gas !!!! see i dont know much about rx7's so.......

 

If the smoke is only condensation from the cold weather, it will dissipate quickly. If a water seal is gone, the smoke is much heavier and hangs in a cloud for a number of seconds. Very white. And it will smell sweet, not like gas.

Overheating is not a great indicator of bad seals; they have to be leaking very badly for that to happen. You would have other signs before it got that far along.

One easy way to check for a bad water seal is to remove the radiator cap (obviously, with a cold engine) and start the car. Wait until the thermostat opens and check for bubbles in the rad. If the water seals are bad, you will see a constant stream of bubbles, more as you increase the rpm. If the seals are particularly bad, the water will flow out of the radiator. That is the compressed gas getting past the seal and pressurizing the cooling system.

If there are no bubbles, I wouldn't worry too much about a bad engine. Change the oil and keep an eye on it. The milky look of the oil may just be from a lack of oil changes and/or a non-functioning purge valve. Not ideal, but not necessarily a bad engine either. To check the purge valve :



And by the way, -SE's do not have o-rings in the intake, so that is not an option.

-John.

 

Oh great, that means my engine is toast. hmm, good excuse to street port i suppose.

 

well i just found out that there is not water in the oil and i dunno what the hell is makein it smoke i mean the smoke is thick as hell and white i told my dad maby some thing is buring in the cat some where cuz if u put ur hand in front of the tail pipe u do not feel nothing cuming out but u can see the white smoke but can not feel it well the car dont smoke to bad around 1000rpm but if we let it run 4 one min it jacks up to 2000rpm it smokes so nad u have to turn it off and we dont know how ling it has beein sitin cuz we just got it yesterday!!

 

I wouldn't say that, just based upon what I've said. It's just my experience/opinion.
Do seek a second opinion. I don't know what symptoms you've had, but the search function should help narrow it down.


It doesn't sound good...but look in the radiator for bubbles...

-John,

 

You could be dumping gas. Pull your plugs and see if they are wet. Make sure all the wires are sparking.

 

FJ: its not just based on what you've said, its been doing it for a while and I have done some searching and it seems like thats the problem, the fact that the coolant level is slowly going down confirms it too. argh, just what i need, aren't these things supposed to last longer than 104k?

 

Mine certainly did, though it was a 12A. Do make sure that it isn't something else, as a well-cared for motor should not be going at 104k miles. I guess the real question is: do you know the history of the car? How did the previous owner treat it? (assuming you're not the original owner) The buy before you might have overheated the engine or whatnot.

Matt
1979 SA22C

 

Not necessarily true. As the temp rises coolant will naturally start to flow out of the radiator with the cap off. When hot the system is pressurized, hence the reason not to remove the rad cap. Otherwise a very informative post

 

82transam: Sorry to hear it. It just sounded like you might have been jumping the gun a bit...




You're quite right. Thanks for pointing it out; I could have been more descriptive.

Allow me to expand: the coolant will spurt, gush and flow out heavily, if the seal is cracked badly enough.

Think Mini Mount St. Helens.

-John.

 

Now there's the visual we needed!